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91. Arid regions in the southwestern United States have become increasingly inviting playgrounds for the growing number of recreation seekers who own vehicles such as motorcycles or powered trail bikes and indulge in hill-climbing contests...

81. Television the most pervasive and persuasive of modern technologies, marked by rapid change and growth, is 0 81. television the most pervasive and persuasive of modern technologies, marked by rapid change and growth, is moving into a ne...